28039-99-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28039-99-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,0,3 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 28039-99:
(7*2)+(6*8)+(5*0)+(4*3)+(3*9)+(2*9)+(1*9)=128
128 % 10 = 8
So 28039-99-8 is a valid CAS Registry Number.